docs: def _convert_value(self, value_orig):
          """
          things like 6 and 1.25 are converted with ast.literal_value
  
          Things like 'hello' are stripped of quotes
          """
          import ast
          if value_orig is None:
              return value_orig
  
          if value_orig.startswith("'") and value_orig.endswith("'"):
              value = value_orig[1:-1]
          else:
  
              try:
                  avalue = ast.parse(value_orig).body[0].value
                  if isinstance(avalue, ast.BinOp):
                      # this is probably a string that happens to look like
                      # a binary operation, e.g. '25-3'
                      value = value_orig
                  else:
                      value = ast.literal_eval(value_orig)
              except Exception:
                  value = self._convert_string(value_orig)
  
              if isinstance(value, int) and '_' in value_orig:
                  value = value_orig
  
          return value